If looking for more torque with that pipe, you can remove the baffle, and using 2 radiator hose band clamps, block off the first 2 rows of holes.
If you like that, then start with the carb.
.028 pilot, .068 main, air/idle 1 1/2 turns out, accelerator pump 3 turns out, is a strong baseline. Adjust from there.

Scott